PARIS — The window is closing for first-to-market mover Second Sight (Sylmar, Calif.) as French start-up Pixium Vision (Paris) prepares a first-in-man trial for its retinal implant Iris-II.

Disc jockeys like to do two-for-Tuesdays and three-for-Thursdays, but we're not spinning music at MDD Perspectives. Today we go into full rebellion mode by offering a Thursday two-fer. Take that, hegemonistic radio stations! MAC, re-MAC, and MAC again Writer Jim Boren is noted for having said a good bureaucrat's guidebook would include the recommendation, "when in doubt, mumble; when in trouble, delegate." Has CMS taken this advice to heart? The reason I ask is that Medicare administrative contractors (MACs) typically fly under the radar screen, but lately not so much. A Medicare...